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Leaflet で circleMarker を手前側に表示

Last updated at Posted at 2017-08-23

こんにちは。
Leaflet で GeoJSON データなどを表示させる際に、circleMarker が手前側に来るように表示させました。pane を指定する方法です1

map.jpg

なお、指定しない場合には:

map2.jpg
index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Leaflet</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://unpkg.com/leaflet@1.2.0/dist/leaflet.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.2.0/dist/leaflet.css">
<style>
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
</body>
<script>
var map = L.map("map");
L.tileLayer("http://{s}.tile.osm.org/{z}/{x}/{y}.png").addTo(map);
map.setView([50.16, 2.3], 9);

var geojson = L.layerGroup([
	L.marker([50.16, 2.3]),  // "Point"
	L.marker([50.20, 2.3]),  // "Point"
	L.polyline([[50.16, 2.1], [50.16, 2.5]]),  // "LineString"
	L.polyline([[50.20, 2.1], [50.20, 2.5]]),  // "LineString"
]).toGeoJSON();

<!-- https://stackoverflow.com/questions/39767499/how-to-set-the-zindex-layer-order-for-geojson-layers -->
map.createPane("pane620").style.zIndex = 620;

var circleMarker = function(feature, latlng) {
    return new L.CircleMarker(latlng, {
     	pane: "pane620",
    	radius: 4,
    	color: "#ff8",
    	fillColor: "#f20",
    	fillOpacity: 1,
    })
    .bindPopup("marker in pane620")
    .bindTooltip("tooltip").openTooltip();
};

L.geoJson(geojson, {pointToLayer: circleMarker}).addTo(map);

</script>
</html>
  1. これは "How to set the zIndex layer order for geoJson layers?" (stackoverflow) の中の方法を参考にしました。

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